Abstract
Increased renal resistive index (RRI) has been recently associated with target organ damage and cardiovascular or renal outcomes in patients with hypertension and diabetes mellitus. However, reference values in the general population and information on familial aggregation are largely lacking. We determined the distribution of RRI, associated factors, and heritability in a population-based study. Families of European ancestry were randomly selected in 3 Swiss cities. Anthropometric parameters and cardiovascular risk factors were assessed. A renal Doppler ultrasound was performed, and RRI was measured in 3 segmental arteries of both kidneys. We used multilevel linear regression analysis to explore the factors associated with RRI, adjusting for center and family relationships. Sex-specific reference values for RRI were generated according to age. Heritability was estimated by variance components using the ASSOC program (SAGE software). Four hundred women (mean age +/- SD, 44.9 +/- 16.7 years) and 326 men (42.1 +/- 16.8 years) with normal renal ultrasound had mean RRI of 0.64 +/- 0.05 and 0.62 +/- 0.05, respectively (P
Original language | English |
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Pages (from-to) | 136-142 |
Journal | Hypertension |
Volume | 63 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 2014 |
Keywords
- reference values
- ultrasonography